id:A166589 - OEIS Search Results

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Totally multiplicative sequence with a(p) = p-3 for prime p.

+0
17

1, -1, 0, 1, 2, 0, 4, -1, 0, -2, 8, 0, 10, -4, 0, 1, 14, 0, 16, 2, 0, -8, 20, 0, 4, -10, 0, 4, 26, 0, 28, -1, 0, -14, 8, 0, 34, -16, 0, -2, 38, 0, 40, 8, 0, -20, 44, 0, 16, -4 (list; graph; listen)

	OFFSET	`1,5`
	FORMULA	`Multiplicative with a(p^e) = (p-3))^e. If n = Product p(k)^e(k) then a(n) = Product (p(k)-3)^e(k). a(3k) = 0 for k >= 1. Abs (a(2^k)) = 1 for k >= 1.`
	CROSSREFS	`Sequence in context: A022904 A019215 A112081 this_sequence A153345 A140648 A153342` `Adjacent sequences: A166586 A166587 A166588 this_sequence A166590 A166591 A166592`
	KEYWORD	`sign`
	AUTHOR	`Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Oct 17 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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